Honeywell NXL User Manual

Page 29

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Honeywell

Honeywell

Honeywell

Cabling and connections

29(96)

6


6.1.1 Cabling

Use cables with heat resistance of at least +70

°

C. The cables and the fuses must be dimensioned

according to the tables below. Installation of cables according to UL regulations is presented in Chapter
6.1.4.
The fuses function also as cable overload protection.
These instructions apply only to cases with one motor and one cable connection from the frequency
converter to the motor. In any other case, ask the factory for more information.

1

st

environment

(restricted

distribution)

2

nd

environment

Cable type

Level H/C

Level L

Level T

Level N

Mains cable

1

1

1

1

Motor cable

3*

2

1

1

Control cable

4

4

4

4

Table 6-1. Cable types required to meet standards.

Level C

= EN 61800-3 (2004), category C1

EN 61000-6-3


Level H

= EN 61800-3 (2004), category C2

EN 61000-6-4

Level L

= EN61800-3 (2004), 2

nd

environment (industrial)

Level T:

See page 9.

Level N:

See page 9.

1

= Power cable intended for fixed installation and the

specific mains voltage. Shielded cable not required.

(NKCABLES/MCMK or similar recommended)

2

= Power cable equipped with concentric protection wire

and intended for the specific mains voltage.

(NKCABLES /MCMK or similar recommended).

3

= Power cable equipped with compact low-impedance

shield and intended for the specific mains voltage.

(NKCABLES /MCCMK, SAB/ÖZCUY-J or similar recommended).
*360º earthing of both motor and FC connection required to meet the standard

4

= Screened cable equipped with compact low-impedance

shield (NKCABLES /jamak, SAB/ÖZCuY-O or similar).


In NXL HVAC (MF4 – MF6): A cable entry flange should be used when installing the motor cable at both
ends in order to reach the EMC levels.

Note:
The EMC requirements are fulfilled at factory defaults of switching frequencies (all frames).

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